Because there is only two possibilities? I don't think it should be necessary (or desirable) to get comfortable with harassment... It should neither be necessary to cross-check EVERY single post or comment someone writes, I personally see A LOT of middle ground between these two options ...
One could think of:
- Calling out harassment / reporting it
- A better education regarding stuff like that (yes, this is an offline-first problem, only amplified trough anonymity)